A disc-type refrigeration device and an ice cream machine

Abstract

The present invention discloses a disc-type refrigeration device and an ice cream machine, belonging to the field of refrigeration. The disc-type refrigeration device includes a compressor, a condenser, a throttle valve and an evaporator, and the evaporator is a disc-type freezing cylinder; the disc-type freezing cylinder includes a horizontally placed disc-shaped housing, and also includes an upper refrigeration disc and a lower refrigeration disc respectively located at the top and bottom of the housing; a rotatable impeller is also installed in the housing; the discharge port of the housing is opened on one side of the outer cylindrical surface of the housing. The present invention adopts the design of a disc-type freezing cylinder body. Under the same volume, the freezing and crystallization area of the disc-type freezing cylinder is increased by 1 time compared with the traditional tube-type freezing cylinder, solving the problems of small freezing area in the inner cavity of the freezing cylinder and low crystallization efficiency. At the same time, it also has the advantages of complete discharging and convenient control.

Description

Technical Field

[0001] The present invention belongs to the field of refrigeration, and particularly relates to a disc-type refrigeration device and an ice cream machine. Background Art

[0002] The freezing cylinder is one of the core components of an ice cream machine, mainly used for cooling and stirring raw materials. The traditional freezing cylinder is of a tube type, which has the advantages of simple structure, easy control and operation, etc., but at the same time has the following defects:

[0003] 1. Only the cylinder wall part is in contact with the refrigerant, and the freezing area is small. The raw materials in the central part cannot be fully cooled, resulting in low crystallization efficiency.

[0004] 2. The stirring spiral blades in the freezing cylinder are used for both stirring, pushing materials, and scraping the raw materials on the inner wall. However, relying on the spiral blades on the agitator to push the ice cream forward, since the raw materials in the frozen state are sticky, they will adhere to the back side of the spiral blades (the side opposite to the pushing direction), resulting in poor discharging and cleaning effects. If the same freezing cylinder is continued to be used to process other types of ice cream, it will cause flavor cross-talk. There are two solutions to this problem. One is to thaw first, clear the remaining ice cream in the freezing cylinder, and then clean and replace with new raw materials, which will cause waste of raw materials, electric energy and time; the other solution is to equip multiple freezing cylinders corresponding to different flavors to prevent flavor cross-talk, but the cost is high and the equipment volume is large. Summary of the Invention

[0005] The present invention provides a disc-type refrigeration device and an ice cream machine, and its purposes are: 1. To solve the problem of small freezing area in the inner cavity of the freezing cylinder and low crystallization efficiency. 2. To solve the problem that the raw materials cannot be completely pushed out.

[0006] The technical solution of the present invention is as follows:

[0007] A disc-type refrigeration device includes a compressor, a condenser, a throttle valve and an evaporator. The output port of the compressor is connected to the input port of the condenser, the output port of the condenser is connected to the refrigerant inlet end of the evaporator through the throttle valve, and the refrigerant outlet end of the evaporator is connected to the input port of the compressor. The evaporator is a disc-type freezing cylinder; the disc-type freezing cylinder includes a horizontally placed disc-shaped housing, and also includes an upper refrigeration disc and a lower refrigeration disc respectively located at the top and bottom of the housing;

[0008] A rotatable impeller is further installed in the housing; the discharge port of the housing is opened on one side of the outer cylindrical surface of the housing.

[0009] As a further improvement of the disc-type refrigeration device: spiral baffles are provided in the inner cavities of the upper refrigeration disc and the lower refrigeration disc, and the spiral baffles form spiral refrigerant flow channels; both the upper refrigeration disc and the lower refrigeration disc are provided with the refrigerant inlet end and the refrigerant outlet end, the refrigerant inlet end is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end is opened at the inner end of the refrigerant flow channel.

[0010] As a further improvement of the disc-type refrigeration device: the disc-type freezing cylinder further includes a feeding pipe, and the feeding pipe is communicated to the center of the top of the housing.

[0011] As a further improvement of the disc-type refrigeration device: the impeller includes an independently rotating upper impeller and a lower impeller, and the axes of the upper impeller and the lower impeller coincide with the axis of the housing;

[0012] The upper impeller includes a first hub and a plurality of first blades evenly distributed around the first hub; the lower impeller includes a second hub and a plurality of second blades evenly distributed around the second hub;

[0013] The bending directions of the first blades and the second blades are the same.

[0014] As a further improvement of the disc-type refrigeration device: an upper scraping strip is installed at the top of the first blade, and the upper scraping strip is in contact with the top surface of the inner cavity of the housing; a lower scraping strip is installed at the bottom of the second blade, and the lower scraping strip is in contact with the bottom surface of the inner cavity of the housing;

[0015] An elastic washer is provided between the first hub and the second hub.

[0016] As a further improvement of the disc-type refrigeration device: the cross-sectional shape of the first blade is L-shaped, including a first horizontal portion and a first vertical portion, and one end of the first horizontal portion is connected to the lower end of the first vertical portion; the cross-sectional shape of the upper scraping strip is inverted U-shaped, and the upper scraping strip is buckled on the top of the first vertical portion, and the top cross-sectional shape is dovetail-shaped;

[0017] The cross-sectional shape of the second blade is inverted L-shaped, including a second horizontal portion and a second vertical portion, and one end of the second horizontal portion is connected to the upper end of the second vertical portion; the cross-sectional shape of the lower scraping strip is U-shaped, and the lower scraping strip is buckled on the bottom of the second vertical portion, and the bottom cross-sectional shape is dovetail-shaped.

[0018] As a further improvement of the disc-type refrigeration device: a first inner hook protrusion extending inward is provided at the outer end of the first blade, and the first inner hook protrusion is inserted into a second slot at the outer end of the upper scraping strip;

[0019] A first insertion protrusion extending inward is provided at the inner end of the upper scraping strip, and the first insertion protrusion is inserted into a first slot provided on the first hub;

[0020] The outer end of the second blade is provided with a second inwardly extending hook projection, and the second inwardly extending hook projection is inserted into a fourth slot at the outer end of the lower scraping strip;

[0021] The inner end of the lower scraping strip is provided with a second insertion projection extending inwardly, and the second insertion projection is inserted into a third slot provided on the second hub.

[0022] As a further improvement of the disc refrigeration device: A sleeve is connected to the bottom of the housing, a drive sleeve is installed in the sleeve through a bearing, and a drive shaft is installed in the inner hole of the drive sleeve through a bearing;

[0023] The upper end of the drive sleeve is fixedly connected to the second hub; the upper end of the drive shaft is fixedly connected to the first hub;

[0024] The disc refrigeration device further includes a drive motor and a transmission mechanism, and the drive motor drives the drive sleeve and the drive shaft to rotate through the transmission mechanism.

[0025] As a further improvement of the disc refrigeration device: The transmission mechanism includes a bearing seat fixedly arranged relative to the housing, and further includes a first gear shaft, a second gear shaft, a first input external gear, a second input external gear, an input internal gear and an electric push rod;

[0026] The first input external gear is installed on the drive shaft, and the second input external gear and the input internal gear are both installed on the drive sleeve;

[0027] The first gear shaft is in transmission connection with the drive motor and meshes with the first input external gear;

[0028] The second gear shaft is installed in the rotating sleeve through a linear bearing, and the rotating sleeve is installed in the bearing seat through a bearing; The electric push rod is connected to the second gear shaft through a bearing and pushes the second gear shaft to move up and down along the linear bearing;

[0029] A first transmission gear and a second transmission gear are arranged on the second gear shaft; The first transmission gear meshes with the first input external gear; When the electric push rod pushes the second gear shaft to reach the first working position, the second transmission gear meshes with the second input external gear and disengages from the input internal gear. At this time, the drive sleeve and the drive shaft rotate in the same direction; When the electric push rod pushes the second gear shaft to reach the second working position, the second transmission gear meshes with the input internal gear and disengages from the second input external gear. At this time, the drive sleeve and the drive shaft rotate in opposite directions and the rotational speed of the drive sleeve is lower than that of the drive shaft.

[0030] The present invention also provides an ice cream machine, including the disc refrigeration device described above, and the disc refrigeration device is wrapped in a second heat insulation layer;

[0031] The ice cream machine further includes multiple groups of raw material supply components arranged in parallel. Each group of raw material supply components respectively includes a raw material container, a stirring device, a conveying pipeline, a liquid suction pump, a gas supply pump, and a solenoid valve;

[0032] A refrigerant pipeline is arranged around the raw material container. The stirring device is located at the bottom of the raw material container and is used for stirring the raw materials in the raw material container. The discharge port of the raw material container is communicated with the inlet pipe of the plate freezer through the conveying pipeline. The liquid suction pump and the gas supply pump are arranged on the conveying pipeline, and the solenoid valve is installed at the end of the conveying pipeline;

[0033] All raw material containers are wrapped in the first heat insulation layer;

[0034] The ice cream machine further includes a discharge valve installed at the discharge port of the housing.

[0035] Compared with the prior art, the present invention has the following positive effects:

[0036] 1. The present invention adopts a plate freezer cylinder design. Since the surface area of the cylinder body is concentrated in the top and bottom regions that can contact the refrigerant in the upper and lower refrigeration plates, the freezing and crystallization area of the plate freezer cylinder is increased compared with the traditional tube-type freezer cylinder under the same volume, solving the problems of small freezing area in the inner cavity of the freezer cylinder and low crystallization efficiency, and improving the crystallization and refrigeration efficiency.

[0037] 2. Due to the plate design, the space occupied by the impeller rotation accounts for more than 95% of the volume inside the freezer cylinder, and the inside of the cylinder is smooth without dead corners. Therefore, the remaining ice cream in the freezer cylinder can be cleared out by the centrifugal force generated by the impeller rotation without thawing, avoiding waste of raw materials and electric energy, saving time, and solving the problem of difficult cleaning.

[0038] 3. The blades are provided with scraping strips that are in close contact with the top and bottom surfaces of the cylinder wall, further improving the clearing effect. At the same time, the inner and outer ends of the scraping strips are fixed on the impeller through two groups of plug-in structures to ensure that the scraping strips will not fall off under the action of centrifugal force. The outer end of the scraping strip twists with the shape of the blade and contacts the inner wall of the housing, further improving the clearing effect.

[0039] 4. The transmission mechanism of the present invention is a reversible structure, and the control is simpler: when the raw materials just enter the freezing cylinder and are in the mixed freezing stage, the upper and lower impellers rotate in opposite directions. The blades of the upper impeller push the raw materials to flow outward, while the blades of the lower impeller scrape the raw materials inward. Due to the structure of the internal and external gears, the rotational speed of the upper impeller must be higher than that of the lower impeller. As a result, the raw materials entering from the top move rapidly towards the outer edge under the dual action of the guiding of the upper impeller and the centrifugal force. After reaching the edge of the cylinder, they fall into the lower layer and then gradually return to the central area under the slow guiding action of the lower impeller. This process is repeated, enabling all raw materials to come into full contact with the top and bottom surfaces of the cylinder, greatly enhancing the cooling effect while achieving stirring. During discharging, when the electric push rod changes the working position and makes the two impellers rotate in the same direction, both of them will be in a high-speed operating state, and the direction of the blades is to push the raw materials towards the outer edge. With the superposition of the centrifugal force during rotation, all the ice cream in the cylinder can be quickly and thoroughly cleared out.

[0040] 5. The ice cream of the present invention has multiple groups of raw material supply components, and the raw materials entering the freezing cylinder can be selected through solenoid valves. After the production of the previous ice cream is completed, the original materials in the plate freezing cylinder will be completely cleared out, and then new raw materials can be replaced, thus realizing the on-site production of single-cup, single-item, multi-variety, and multi-flavor ice cream with a single ice cream machine and a single cylinder without flavor mixing, ensuring quality and quantity, and meeting people's needs for personalized services. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the overall structure of the ice cream machine of the present invention;

[0042] Figure 2 is Figure 1 a partial enlarged view of part A in

[0043] Figure 3 is Figure 2 a sectional view taken along the I-I direction of

[0044] Figure 4 is Figure 2 a sectional view taken along the II-II direction of

[0045] Figure 5 is Figure 1 a partial enlarged view of part B in

[0046] Figure 6 is a bottom view of the upper impeller;

[0047] Figure 7 is a sectional view of the upper impeller and the upper scraping strip part;

[0048] Figure 8 is a sectional view of the first blade and the upper scraping strip part;

[0049] Figure 9Stereoscopic sectional view of the upper scraping strip;

[0050] Figure 10 Bottom view of the lower impeller;

[0051] Figure 11 Sectional view of the lower impeller and the lower scraping strip part;

[0052] Figure 12 Cross-sectional view of the second blade and the lower scraping strip part;

[0053] Figure 13 Stereoscopic sectional view of the lower scraping strip.

[0054] Reference numerals include:

[0055] 1. First heat insulation layer; 2. Raw material container; 3. Stirring device; 4. Liquid suction pump; 5. Air supply pump; 6. Solenoid valve; 7. Compressor; 8. Condenser; 9. Throttle valve; 10. Second heat insulation layer; 11. Disk freezing cylinder; 12. Transmission mechanism; 13. Driving motor; 14. Discharge valve; 1101. Feed pipe; 1102. Spiral baffle; 1103. Upper refrigeration plate; 1104. Lower refrigeration plate; 1105. Upper impeller; 11051. First blade; 11052. First hub; 11053. First inner hook projection; 11054. First slot; 1106. Lower impeller; 11061. Second blade; 11062. Second hub; 11063. Second inner hook projection; 11064. Third slot; 1107. Elastic washer; 1108. Sleeve; 1109. Transmission sleeve; 1110. Transmission shaft; 1111. Refrigerant inlet end; 1112. Refrigerant outlet end; 1113. Upper scraping strip; 11131. Second slot; 11132. First plugging projection; 1114. Lower scraping strip; 11141. Fourth slot; 11142. Second plugging projection; 1201. First gear shaft; 1202. First input external gear; 1203. Electric push rod; 1204. Bearing seat; 1205. Rotating sleeve; 1206. Second gear shaft; 12061. First transmission gear; 12062. Second transmission gear; 1207. Second input external gear; 1208. Input internal gear. Detailed implementation manners

[0056] The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Embodiment 1

[0057] As Figure 1 , a disk refrigeration device, specifically a disk refrigeration device in an ice cream machine, includes a compressor 7, a condenser 8, a throttle valve 9 and an evaporator.

[0058] The outlet of the compressor 7 is connected to the inlet of the condenser 8. The outlet of the condenser 8 is connected to the refrigerant inlet end 1111 of the evaporator through a throttle valve 9. The refrigerant outlet end 1112 of the evaporator is connected to the inlet of the compressor 7.

[0059] Specifically, as Figure 1 and Figure 2 show, the evaporator is a disk-shaped freezing cylinder 11, and the disk-shaped freezing cylinder 11 includes a horizontally placed disk-shaped housing. As Figure 3 shown, the housing is composed of a U-shaped container on the left and a freezing cylinder door panel on the right. A semi-moon plate is provided on the freezing cylinder door panel, and the semi-moon plate is inserted into the opening of the U-shaped container, so that the housing forms a disc-shaped space. The discharge port of the housing is opened on one side of the outer cylindrical surface of the housing, that is, on the freezing cylinder door panel.

[0060] As Figure 1 and Figure 2 show, the disk-shaped freezing cylinder 11 further includes a feed pipe 1101, and the feed pipe 1101 is vertically connected to the center of the top of the housing. The disk-shaped freezing cylinder 11 further includes an upper refrigeration disk 1103 and a lower refrigeration disk 1104 located at the top and bottom of the housing respectively.

[0061] Furthermore, as Figure 4 shown, spiral baffles 1102 are provided in the inner cavities of the upper refrigeration disk 1103 and the lower refrigeration disk 1104, and the spiral baffles 1102 form spiral refrigerant flow channels. The upper refrigeration disk 1103 and the lower refrigeration disk 1104 are both provided with the refrigerant inlet end 1111 and the refrigerant outlet end 1112. The refrigerant inlet end 1111 is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end 1112 is opened at the inner end of the refrigerant flow channel. When the refrigerant flows in the refrigeration disk along the refrigerant flow channel, it can exchange heat with the raw materials inside the housing to freeze the raw materials.

[0062] As Figure 2 shown, a rotatable impeller is further installed inside the housing. In this embodiment, the impeller includes an upper impeller 1105 and a lower impeller 1106 that rotate independently, and the axes of the upper impeller 1105 and the lower impeller 1106 coincide with the axis of the housing.

[0063] As Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the upper impeller 1105 includes a first hub 11052 and a number of first blades 11051 evenly distributed around the first hub 11052. An upper scraping strip 1113 is installed at the top of the first blade 11051, and the upper scraping strip 1113 contacts the top surface of the inner cavity of the housing. Further, the cross-sectional shape of the first blade 11051 is L-shaped, including a first horizontal portion and a first vertical portion, and one end of the first horizontal portion is connected to the lower end of the first vertical portion. The upper scraping strip 1113 is made of silica gel, and its cross-sectional shape is inverted U-shaped. The upper scraping strip 1113 is buckled on the top of the first vertical portion, and the cross-sectional shape of the top is dovetail-shaped. The L-shaped structure can achieve good stirring and guiding effects, while the dovetail-shaped structure of the scraping strip can increase the contact area with the housing and improve the scraping effect. Further, a first inner hook protrusion 11053 extending inward is provided at the outer end of the first blade 11051, and the first inner hook protrusion 11053 is inserted into a second slot 11131 at the outer end of the upper scraping strip 1113. A first insertion protrusion 11132 extending inward is provided at the inner end of the upper scraping strip 1113, and the first insertion protrusion 11132 is inserted into a first slot 11054 opened on the first hub 11052. The inner and outer ends of the scraping strip are fixed to the impeller through two groups of insertion structures, which can ensure that the scraping strip will not fall off easily under the action of centrifugal force.

[0064] Similarly, as Figure 10 , Figure 11 , Figure 12 , Figure 13 shown, the lower impeller 1106 includes a second hub 11062 and a number of second blades 11061 evenly distributed around the second hub 11062. A lower scraping strip 1114 is installed at the bottom of the second blade 11061, and the lower scraping strip 1114 contacts the bottom surface of the inner cavity of the housing. The cross-sectional shape of the second blade 11061 is inverted L-shaped, including a second horizontal portion and a second vertical portion, and one end of the second horizontal portion is connected to the upper end of the second vertical portion. The cross-sectional shape of the lower scraping strip 1114 is U-shaped, and the lower scraping strip 1114 is buckled on the bottom of the second vertical portion, and the cross-sectional shape of the bottom is dovetail-shaped. A second inner hook protrusion 11063 extending inward is provided at the outer end of the second blade 11061, and the second inner hook protrusion 11063 is inserted into a fourth slot 11141 at the outer end of the lower scraping strip 1114. A second insertion protrusion 11142 extending inward is provided at the inner end of the lower scraping strip 1114, and the second insertion protrusion 11142 is inserted into a third slot 11064 opened on the second hub 11062.

[0065] As Figure 6 and Figure 10 shown, the bending directions of the first blade 11051 and the second blade 11061 are the same. As Figure 8 and Figure 12As shown, the height of one side of the U-shaped cross-section of the scraping bar corresponding to the outer rotating surface of the blade is equal to the height of the blade. Moreover, since the blade is curved, the outermost end of this side of the scraping bar will exceed the blade as it bends and is located outside the outermost end of the blade, so that it can directly contact the inner wall of the housing, achieving a comprehensive scraping of the entire inner wall of the housing.

[0066] As Figure 2 and Figure 5 As shown, a sleeve 1108 is connected to the bottom of the housing. A transmission sleeve 1109 is installed in the sleeve 1108 through a bearing, and a transmission shaft 1110 is installed in the inner hole of the transmission sleeve 1109 through a bearing.

[0067] The upper end of the transmission sleeve 1109 is fixedly connected to the second hub 11062 through an internal hexagonal structure, and the upper end of the transmission shaft 1110 is fixedly connected to the first hub 11052 through an internal hexagonal structure. The bottom of the first hub 11052 passes through the central hole of the second hub 11062, and there is a shaft-hole fit between the two, allowing relative rotation. An elastic washer 1107 is provided between the contact end faces of the first hub 11052 and the second hub 11062. On the one hand, it plays a sealing role, and on the other hand, it can push the upper impeller 1105 and the lower impeller 1106 to both sides, making the upper scraping bar 1113 and the lower scraping bar 1114 keep in close contact with the housing, improving the scraping effect.

[0068] The disc-type refrigeration device further includes a driving motor 13 and a transmission mechanism 12. The driving motor 13 drives the transmission sleeve 1109 and the transmission shaft 1110 to rotate through the transmission mechanism 12.

[0069] Further, the transmission mechanism 12 includes a bearing seat 1204 fixedly arranged relative to the housing, and also includes a first gear shaft 1201, a second gear shaft 1206, a first input external gear 1202, a second input external gear 1207, an input internal gear 1208, and an electric push rod 1203.

[0070] The first input external gear 1202 is installed on the transmission shaft 1110 and is used to drive the upper impeller 1105 to rotate. The second input external gear 1207 and the input internal gear 1208 are both installed on the transmission sleeve 1109 and are used to drive the lower impeller 1106 to rotate.

[0071] The first gear shaft 1201 is in transmission connection with the driving motor 13 and meshes with the first input external gear 1202.

[0072] The second gear shaft 1206 is installed in a rotating sleeve 1205 through a linear bearing, and the rotating sleeve 1205 is installed in the bearing seat 1204 through a bearing. The electric push rod 1203 is connected to the second gear shaft 1206 through a bearing and pushes the second gear shaft 1206 to move up and down along the linear bearing.

[0073] A first transmission gear 12061 and a second transmission gear 12062 are provided on the second gear shaft 1206. The first transmission gear 12061 has a relatively wide width and always meshes with the first input external gear 1202. When the electric push rod 1203 pushes the second gear shaft 1206 to the first working position, the second transmission gear 12062 meshes with the second input external gear 1207 and disengages from the input internal gear 1208. At this time, the transmission sleeve 1109 and the transmission shaft 1110 rotate in the same direction. When the electric push rod 1203 pushes the second gear shaft 1206 to the second working position, the second transmission gear 12062 meshes with the input internal gear 1208 and disengages from the second input external gear 1207. At this time, the transmission sleeve 1109 and the transmission shaft 1110 rotate in opposite directions and the rotational speed of the transmission sleeve 1109 is lower than that of the transmission shaft 1110.

[0074] The working process is as follows:

[0075] In the stirring and freezing stage, the electric push rod 1203 pushes the second gear shaft 1206 to the second working position. At this time, the drive motor 13 drives the upper impeller 1105 to rotate counterclockwise at a high speed through the first gear shaft 1201, the first input external gear 1202, and the transmission shaft 1110 (the counterclockwise direction here is based on Figure 6 the view direction), and at the same time, the first input external gear 1202 drives the lower impeller 1106 to rotate clockwise at a low speed through the second gear shaft 1206, the input internal gear 1208, and the transmission sleeve 1109 (the clockwise direction here is based on Figure 10 the view direction). The raw material liquid enters the housing of the disk freezing cylinder 11 body from the feed pipe 1101 and reaches the central area at the top of the housing. Then, under the dual action of the rotation of the blades of the upper impeller 1105 and the centrifugal force, the raw material liquid cools while moving outward along the top surface of the housing and reaches the edge. Then it is blocked by the inner wall of the housing and flows to the lower layer. Then, under the low-speed reverse thrust of the lower impeller 1106, it moves close to the bottom surface of the housing towards the center, so as to fully conduct heat exchange and complete freezing and cooling. And under the action of the forward and reverse rotation of the blades, the raw material liquid is quickly solidified and expanded. It should be noted that the rotational speed of the drive motor 13 in the stirring and freezing stage should be set within a suitable range, which should not only ensure that the upper impeller 1105 rotating at a high speed has a certain centrifugal force, but also ensure that the lower impeller 1106 rotating at a low speed will not throw out the raw materials through the centrifugal force.

[0076] In the discharging stage, the electric push rod 1203 pushes the second gear shaft 1206 to the first working position. At this time, the working mode of the upper impeller 1105 remains unchanged, while the first input external gear 1202 will drive the lower impeller 1106 to rotate counterclockwise at high speed (in the same direction and at the same speed as the upper impeller 1105) through the second gear shaft 1206, the second input external gear 1207, and the transmission sleeve 1109. At this time, the upper impeller 1105 and the lower impeller 1106 rotate forward simultaneously to discharge the material. It should be noted that the rotation speed of the driving motor 13 in the discharging stage is significantly higher than that in the stirring and freezing stage, aiming to improve the discharging effect.

[0077] The inside of the disk freezing cylinder 11 is smooth without dead corners, and the parts are assembled tightly without interlayers. Under the pushing and centrifugal action of the impellers, the original material will be cleared out thoroughly and cleanly without residue. It can realize on-site production of single cups and single products without flavor mixing, ensuring quality and quantity, and meeting people's requirements for personalized services. At the same time, by using the simultaneous forward rotation of the upper impeller 1105 and the lower impeller 1106 to adjust the centrifugal action generated by the rotation speed of the impeller stirrer, the remaining ice cream material in the freezing cylinder can be cleared out without thawing, avoiding waste of raw materials and electric energy and saving time. This function can also be applied to operation links such as drying and sterilization. Embodiment 2

[0078] As Figure 1 , this embodiment discloses an ice cream machine, which includes the disk refrigeration device described in Embodiment 1.

[0079] The ice cream machine further includes multiple groups of raw material supply components arranged in parallel. Each group of raw material supply components respectively includes a raw material container 2, a stirring device 3, a conveying pipeline, a liquid suction pump 4, a gas supply pump 5, and a solenoid valve 6.

[0080] A refrigerant pipeline is arranged around the raw material container 2. The stirring device 3 is located at the bottom of the raw material container 2 and is used to stir the raw materials in the raw material container 2. The discharge port of the raw material container 2 is connected to the inlet pipe 1101 of the disk freezing cylinder 11 through the conveying pipeline. The liquid suction pump 4 and the gas supply pump 5 are arranged on the conveying pipeline, and the solenoid valve 6 is installed at the end of the conveying pipeline. The liquid suction pump 4 and the gas supply pump 5 can control the expansion ratio, and the solenoid valve 6 is used to control the continuous addition of materials and the replacement of varieties. The raw material container 2 can be designed in different specifications such as 2 to 6, and different flavored raw material liquids can be placed in each, facilitating the production of products with different flavored varieties.

[0081] All the raw material containers 2 are wrapped in the first heat insulation layer 1, and the disk refrigeration device is wrapped in the second heat insulation layer 10.

[0082] The ice cream machine further includes a discharge valve 14 installed at the discharge port of the housing. The valve stem of the discharge valve 14 is installed in the freezing cylinder door panel, and a ramp discharge channel is designed at the discharge port.

[0083] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. The scope of the present invention is defined by the claims rather than the above description.

Claims

1. A disc-type refrigeration device, comprising a compressor (7), a condenser (8), a throttle valve (9) and an evaporator. The output port of the compressor (7) is connected to the input port of the condenser (8). The output port of the condenser (8) is connected to the refrigerant inlet end (1111) of the evaporator through the throttle valve (9). The refrigerant outlet end (1112) of the evaporator is connected to the input port of the compressor (7), and is characterized in that: The evaporator is a disc - type freezing cylinder (11); the disc - type freezing cylinder (11) includes a horizontally placed disc - shaped housing, and also includes an upper refrigerating disc (1103) and a lower refrigerating disc (1104) located at the top and bottom of the housing respectively; A rotatable impeller is also installed in the housing; the discharge port of the housing is opened on one side of the outer cylindrical surface of the housing; The disc - type freezing cylinder (11) further includes a feed pipe (1101), and the feed pipe (1101) is communicated to the center of the top of the housing; The impeller includes an independently rotating upper impeller (1105) and a lower impeller (1106), and the axes of the upper impeller (1105) and the lower impeller (1106) coincide with the axis of the housing; The upper impeller (1105) includes a first hub (11052) and a number of first blades (11051) evenly distributed around the first hub (11052); the lower impeller (1106) includes a second hub (11062) and a number of second blades (11061) evenly distributed around the second hub (11062); The bending directions of the first blades (11051) and the second blades (11061) are the same; An upper scraping bar (1113) is installed at the top of the first blade (11051), and the upper scraping bar (1113) contacts the top surface of the inner cavity of the housing; a lower scraping bar (1114) is installed at the bottom of the second blade (11061), and the lower scraping bar (1114) contacts the bottom surface of the inner cavity of the housing; An elastic washer (1107) is arranged between the first hub (11052) and the second hub (11062); A sleeve (1108) is connected to the bottom of the housing, a transmission sleeve (1109) is installed in the sleeve (1108) through a bearing, and a transmission shaft (1110) is installed in the inner hole of the transmission sleeve (1109) through a bearing; The upper end of the transmission sleeve (1109) is fixedly connected to the second hub (11062); the upper end of the transmission shaft (1110) is fixedly connected to the first hub (11052); The disc - type refrigeration device further includes a driving motor (13) and a transmission mechanism (12), and the driving motor (13) drives the transmission sleeve (1109) and the transmission shaft (1110) to rotate through the transmission mechanism (12); The transmission mechanism (12) includes a bearing seat (1204) fixedly arranged relative to the housing, and also includes a first gear shaft (1201), a second gear shaft (1206), a first input external gear (1202), a second input external gear (1207), an input internal gear (1208) and an electric push rod (1203); The first input external gear (1202) is installed on the transmission shaft (1110), and the second input external gear (1207) and the input internal gear (1208) are both installed on the transmission sleeve (1109); The first gear shaft (1201) is in transmission connection with the driving motor (13) and meshes with the first input external gear (1202); The second gear shaft (1206) is installed in the rotating sleeve (1205) through a linear bearing, and the rotating sleeve (1205) is installed in the bearing seat (1204) through a bearing; the electric push rod (1203) is connected to the second gear shaft (1206) through a bearing and pushes the second gear shaft (1206) to move up and down along the linear bearing; A first transmission gear (12061) and a second transmission gear (12062) are arranged on the second gear shaft (1206); the first transmission gear (12061) meshes with the first input external gear (1202); when the electric push rod (1203) pushes the second gear shaft (1206) to reach the first working position, the second transmission gear (12062) meshes with the second input external gear (1207) and disengages from the input internal gear (1208), and at this time, the transmission sleeve (1109) and the transmission shaft (1110) rotate in the same direction; when the electric push rod (1203) pushes the second gear shaft (1206) to reach the second working position, the second transmission gear (12062) meshes with the input internal gear (1208) and disengages from the second input external gear (1207), and at this time, the transmission sleeve (1109) and the transmission shaft (1110) rotate in the opposite direction and the rotation speed of the transmission sleeve (1109) is lower than that of the transmission shaft (1110).

2. The disc refrigeration device according to claim 1, wherein: Spiral baffles (1102) are provided in the inner cavities of the upper refrigerating disc (1103) and the lower refrigerating disc (1104), and the spiral baffles (1102) form spiral refrigerant flow channels; both the upper refrigerating disc (1103) and the lower refrigerating disc (1104) are provided with the refrigerant inlet end (1111) and the refrigerant outlet end (1112), the refrigerant inlet end (1111) is opened at the outer end of the refrigerant flow channel, and the refrigerant outlet end (1112) is opened at the inner end of the refrigerant flow channel.

3. The disk refrigeration device according to claim 1, characterized in that: The cross-sectional shape of the first blade (11051) is L-shaped, including a first horizontal part and a first vertical part, and one end of the first horizontal part is connected to the lower end of the first vertical part; the cross-sectional shape of the upper scraping strip (1113) is inverted U-shaped, and the upper scraping strip (1113) is buckled on the top of the first vertical part, and the cross-sectional shape of the top is dovetail-shaped; The cross-sectional shape of the second blade (11061) is inverted L-shaped, including a second horizontal part and a second vertical part, and one end of the second horizontal part is connected to the upper end of the second vertical part; the cross-sectional shape of the lower scraping strip (1114) is U-shaped, and the lower scraping strip (1114) is buckled on the bottom of the second vertical part, and the cross-sectional shape of the bottom is dovetail-shaped.

4. The disk refrigeration device according to claim 1, characterized in that: The outer end of the first blade (11051) is provided with a first inner hook protrusion (11053) extending inward, and the first inner hook protrusion (11053) is inserted into the second slot (11131) at the outer end of the upper scraping strip (1113); The inner end of the upper scraping strip (1113) is provided with a first insertion protrusion (11132) extending inward, and the first insertion protrusion (11132) is inserted into the first slot (11054) opened on the first hub (11052); The outer end of the second blade (11061) is provided with a second inwardly protruding inner hook projection (11063), and the second inwardly protruding inner hook projection (11063) is inserted into a fourth slot (11141) at the outer end of the lower scraping strip (1114); The inner end of the lower scraping strip (1114) is provided with a second insertion projection (11142) protruding inwardly, and the second insertion projection (11142) is inserted into a third slot (11064) formed in the second hub (11062).

5. An ice cream machine, characterized in that: Comprising the disc-type refrigeration device according to any one of claims 1 to 4, the disc-type refrigeration device being wrapped in a second heat-insulating layer (10); The ice cream machine further includes a plurality of groups of raw material supply components arranged in parallel, and each group of raw material supply components respectively includes a raw material container (2), a stirring device (3), a conveying pipeline, a liquid suction pump (4), a gas supply pump (5), and a solenoid valve (6); A refrigerant pipeline is arranged around the raw material container (2), the stirring device (3) is located at the bottom of the raw material container (2) and is used for stirring the raw materials in the raw material container (2), and the discharge port of the raw material container (2) is communicated with the feeding pipe (1101) of the disc-type freezing cylinder (11) through a conveying pipeline; the liquid suction pump (4) and the gas supply pump (5) are arranged on the conveying pipeline, and the solenoid valve (6) is installed at the end of the conveying pipeline; All the raw material containers (2) are wrapped in a first heat-insulating layer (1); The ice cream machine further includes a discharge valve (14) installed at the discharge port of the housing.

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